**5. Conclusion**

Biocontrol is a progressive and environment friendly way to control the pest. It leaves behind no chemical residues that may have a harmful impact on humans or other organisms. Importation, augmentation and conservation of natural enemies form the three basic approaches to biological control. Specified techniques underlying these approaches are developing at constant and are modified to meet the switching requirements of pest management. Modifications and improvements in rearing and application techniques and genetic advancement of natural enemies have increased the effectiveness of biological control agents. Further, application of new ecological theory is transforming the research need at conservation of natural enemies. For its successful implementation with full potentiality, continued refinement and adaptation of approaches and applications are necessary. Additional burden from the consumers and the expanding organic market requirements for biological control, come up with advantageous conditions for future development of the biological control agents in agriculture.
